首页
登录
职称英语
In the early 1950s the researchers who produced the first clad glass optical
In the early 1950s the researchers who produced the first clad glass optical
游客
2024-08-16
46
管理
问题
In the early 1950s the researchers who produced the first clad glass optical fibers were not thinking of using them for communications.【C1】H______, fiber optics was already a well-established commercial technology when the famous paper by Kao and Hockham,【C2】______ (claim)the use of low-loss optical fibers for communication, appeared in 1966. The first low-loss silica fiber was described in【C3】______which appeared in October of 1970. The date of this publication is sometimes【C4】______(cite)as the beginning of the era of fiber communication. Although this development did receive【C5】______(consider)attention in the research community at the time, it was far from inevitable that a major industry would evolve.
The technological barriers appeared formidable because there were serious doubts as to 【C6】wh______these fiber components could ever be produced economically enough, but the market potential was very significant.【C7】______(consequence), research and development activity expanded rapidly, and a number of important issues were【C8】re______during the early 1970s. During the middle and late 1970s, the rate of progress towards marketable products accelerated as the emphasis【C9】______(shift)from research to engineering. Fibers with losses【C10】 app______the Rayleigh limit of 2 dB/km at a wavelength of 0. 8 μm were produced.
By 1980 improvement in component performance, cost, and reliability led to major commitments on the part of telephone companies. [br] 【C5】
选项
答案
considerable
解析
此处需要形容词形式修饰名词attention。considerable attention相当多的关注。此句可译为:尽管当时这项技术在研究领域确实引起了极大的关注,但要发展成一个重要产业还相差甚远。
转载请注明原文地址:https://tihaiku.com/zcyy/3721578.html
相关试题推荐
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
随机试题
Inthisdenselypopulatedcity,acidrainis______;itisasignbothofindustr
Therearetwomethodsoffighting,theonebylaw,theotherbyforce;thef
TheU.S.condemned[originaltext][29C]TheUnitedSlateshascondemnedIsrae
Mercifully,IwasabletocompleteallIhadtodowithinafewdays.Theunderl
WriteonANSWERSHEETONEanoteofabout50~60wordsbasedonthefollowi
[originaltext]Wehearitalotinthenewsthesedays:"Recyclenewspap
脑脊液中白细胞数明显升高多见于A.化脓性脑膜炎 B.脑出血 C.病毒性脑膜炎
借款人自主支付方式下,借款人提出提款申请后,贷款人应审核借款人提交的贷款清单所列
下列不属于区域火灾风险评估原则的是()。A.系统性原则 B.实用性原则 C
某省税务局拟确定一家服务业、娱乐业、文化体育业专用发票印制企业。甲公司、乙公司均
最新回复
(
0
)